Phonon Spectrum of Crystals InxTl1 – xI Substitutional Solid Solutions

Kashuba, A. I.; Apunevych, S. V.

doi:10.21272/jnep.8(1).01010

Cited by 10 publications

(9 citation statements)

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“…The ampoules were pulled down into the furnace at the speed of 3 mm/h for 48 h. After that, we annealed the crystals in the same furnace. This was done at the temperature T = 180°C during 24 h. Issuing from the study [9] and our further refined structural data, we have found that our samples are characterized by the concentration value x = 0.50±0.05.…”

Section: Methodsmentioning

confidence: 66%

“…In particular, the authors of the study [10] have predicted that InI can serve as a matrix for inclusion of TlI quantum dots. As compared with pure ІnI, a decrease in the lattice parameters b and c, accompanied with increase in the parameter a and decrease in the lattice volume, have been observed in In 0.5 Tl 0.5 I [9], which can indicate a possible structural transformation in this compound.…”

Section: Introductionmentioning

confidence: 85%

“…Recently the Іn x Tl 1-x I system has been investigated with respect to its mechanical properties, phonon spectra and some optical features [5,[8][9][10]. In particular, the authors of the study [10] have predicted that InI can serve as a matrix for inclusion of TlI quantum dots.…”

Section: Introductionmentioning

confidence: 99%

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Photoluminescence in the solid solution In0.5Tl0.5I

Kashuba¹,

Zhydachevskyy²,

Semkiv³

et al. 2018

Ukr. J. Phys. Opt.

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Abstract. Photoluminescence (PL) emission spectra are studied for In x Tl 1-x I solid solution with x ≈ 0.5. Two broad bands located approximately at 1.6 and 2.2 eV are found and their physical mechanisms are discussed. The low-energy band has not been earlier detected in the pure InI compound but resembles that observed in TlI. Time decay of the PL in In 0.5 Tl 0.5 I is studied. Strong temperature dependence of the PL intensity is revealed. Optical absorption edge in In 0.5 Tl 0.5 I is found to be formed predominantly by inter-cation transitions. PL excitation spectra are measured for the light wavelengths 570 and 800 nm and their parameters are evaluated.

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Section: Methodsmentioning

confidence: 66%

Section: Introductionmentioning

confidence: 85%

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Photoluminescence in the solid solution In0.5Tl0.5I

Kashuba¹,

Zhydachevskyy²,

Semkiv³

et al. 2018

Ukr. J. Phys. Opt.

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“…[28]. Up to now many references concerning the investigations of the pseudobinary InI-TlI solid state alloys system are known [16,17,21,24,29,30]. Our goal is to study the influence of the cation content change of the samples In x Tl 1−x I in the range of x = 0.0-0.7, with the increment of 0.1, on the corresponding optical properties.…”

Section: Crystal Structurementioning

confidence: 99%

Specific Features of Content Dependences for Energy Gap in In_xTl_1-xI Solid State Crystalline Alloys

et al. 2018

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A series of InxTl1−xI (x = 0.4−0.9) single crystalline solid state alloys were successfully synthesized by the vertical Bridgman method. For the first time the density functional theory based band structure calculations are performed and features of the band energy dispersion are discussed. Comparison with the experimental energy gap Eg obtained from the optical photoconductivity is discussed. An essential role of the localized defects and excitons in formation of the edge photoconductivity is analyzed. Relation between the crystal structure and photoconductivity of the materials studied is discussed. Also the origin of the principal valence and conduction bands is explored. Experimental measurements of the band gap Eg by the optical and photoconductivity methods have given opposite dependences with respect to the indium content x. Features of the photoconductivity spectra for different crystallographic directions have been discussed with taking into account the chemical bonds anisotropy.

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“…Practical interest to substitutional solid solutions (SSSs) In Tl 1− I is, first of all, associated with a possibility to use them as a basis for the creation of either narrow-band optical filters in a wide spectral range or detectors of ionizing radiation [1][2][3][4]. Substitutional solid solutions are characterized by a continuous variation of their lattice parameters.…”

Section: Introductionmentioning

confidence: 99%

Elastic Properties of Substitutional Solid Solutions InxTl1-xI and Sound Wave Velocities in Them

Франів¹,

Kashuba²,

Bovgyra³

et al. 2017

Ukr. J. Phys.

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Elastic properties of substitutional solid solutions In Tl1− I have been studied. The corresponding Young modulus, shear modulus, and compression modulus are calculated theoretically. The dependence of the elastic properties of the In Tl1− I solid solution on the content within the interval 0.375 ≤ ≤ 1 is analyzed. The velocity of sound propagation in examined specimens is studied experimentally. The obtained data are used to calculate the elastic coefficient 22 for In Tl1− I. The theoretical results are found to be in good agreement with experimental data.

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Phonon Spectrum of Crystals InxTl1 – xI Substitutional Solid Solutions

Cited by 10 publications

References 0 publications

Photoluminescence in the solid solution In0.5Tl0.5I

Photoluminescence in the solid solution In0.5Tl0.5I

Specific Features of Content Dependences for Energy Gap in In_xTl_1-xI Solid State Crystalline Alloys

Elastic Properties of Substitutional Solid Solutions InxTl1-xI and Sound Wave Velocities in Them

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Phonon Spectrum of Crystals InxTl1 – xI Substitutional Solid Solutions

Cited by 10 publications

References 0 publications

Photoluminescence in the solid solution In0.5Tl0.5I

Photoluminescence in the solid solution In0.5Tl0.5I

Specific Features of Content Dependences for Energy Gap in InxTl1-xI Solid State Crystalline Alloys

Elastic Properties of Substitutional Solid Solutions InxTl1-xI and Sound Wave Velocities in Them

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Product

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Specific Features of Content Dependences for Energy Gap in In_xTl_1-xI Solid State Crystalline Alloys